Process of preparing chlorinated ethylenes



Patented l6, 1939 I v I r g uN TEo s'rAras PATENT. Qfflgg, aisazis I Georg Bsselsnd Erich schaeiieryllnrghansen, llpperBavarimGermanmasslsnol-stonndlex .ander'wacker Gesellsollalt iiir.

Germany, a corporation of Gas-many scul t. wL-m-m),

This invention'relates to the simultaneous proiron chloride, there is a conversion to vinyl chloduction of monochlorethylene and polychlor- 'ride of 12%, the process being periormed asin ethylenes and has for its object to provide an Example 1. I improved economical process ior this purpose, EsompleS I 4 g sg figs zgzfig gg ggggfi g In using cadmium chloride as a catalyst, there with more than 3 atoms of chlorine is passed over is conversion to vinyl chloride of In catalysts at elevated temperatures. The'process z i ggg giflsag fig 22;1 :353 or animal is suitably periormed'at ZOO-300 C. and utilizes l porous bodies of high slu'iace action, such as Emmpleti l0 activated carbon as catalysts- Chlorine n In a saturation of activated carbon with 17% I fi fi i ififg az zgg' gg g zggg gggz g' mercuric chloride,'there is obtained a vinyl chlor rid co rsion of 27 corporated with' the catalyst. The acetylene, e nve which is used advantageously in excess quanti- E m ll ies. m y e a ai addedto the e i n i tur In a saturation oi activated carbon with 15% so far as it was not'used in the reactionzinc chloride, there is a conversion to vinyl chlo-' Example 8 A .gaseous mixture of 378 g. tetrachlorethane 4 and 60-80 g. acetylene is caused to pass, in an Thmugh a catalyst spacewhich was charged hour's time, through a space of 2000 cubic with activated carbon corresponding to Example heated to 5 c which is fined w 2, there were passed in-one hour at a temperature activated carbon. A mixture oi unconverted about Pentacmwetme and tetrachlorethane, trichlorethylene, vinyl chloride, 8- of acetylene- The mixture Withdrawn from u acetylene and hydrochloric acid emerges from .the reaction space consisted oi unconverted penthe reaction space, and a mixture oi trichloreth: tacmorethaner further tetmmmmylener Vinyl ylene and tetrachlorethane can be separated from hydmchhflc m which this gas by cooling; The hydrochloric acid may was worked up in the manner described in. Exbe removed by water and the vinyl chloride ample '1. The quantity of recovered vinyl chlo- (monochlorethylene) recovered to a ride in an 8-..and 0! tetrachlorlow temperature or by means of suitable nonethylene 322 8- e Same W y. p ntachlorvolatile absorption means. The quantity of vinyl ethane m -1 be'convel'ted tetrachlorethchloride recovered in an mounts to 3 and ylene and vinyl chloride with activated carbon cttrlemo t 271 g alone, or with carbon which is saturated with 85 other types of metal salts.

u 2 The invention claimed is: i

The conditions correspond to those-oi Example 1. Process of preparing chlorinated etbylenes 1, but the activated carbon is saturated with which comprises passing a gaseous mixture of 0 barium chloride tothe extent oi about 50% of its acetylene and pentachlorethane .over a catalyst. o

weight. The quantity recovered in an hour substance of high surface action at a temperature amounts to 28.6 g. vinyl chloride and-1'10 g. ti-ioi 200-300C.

hl t 'h v 2. Process of preparing chlorinated ethylenes EmmpleS which comprises passing s-gaseous mixture of.

The processispermrmedu in E m e I'm acetylene-and pentachlorethane over activated r carbon at a temperature of 200-300 C. the activated carbon is saturated with 15% bismuth chloride. In an hourly supply of 430 g. of Preparing *mmnsted memes tetrachlorethane and 80 g. or acetylene. there which comprises Mug gaseous mix-tum lene and pentachlorethane over activated is formed 87 g. vinyl chloride, which corresponds to aitransm n of 535% carbon containing a metal chloride, at a temperature of 200400 0.- Example 4 V carom BASEL. v x In a saturation of activated carbon with 20% ERICK m 

